[
    {
        "S": "john.smith",
        "P": "Only Sentence",
        "O": "data",
        "T": "2017-05-30T08:51:43.059Z"
    },
    {
        "S": "Only subject metadata",
        "SM": {
            "FirstName": "John",
            "LastName": "Smith"
        }
    },
    {
        "S": "Only Object Metadata",
        "OM": {
            "Personalization": {
                "Id": "123456",
                "Type": "Page",
                "Segment": "Developer"
            },
            "Title": "Home page",
            "PageId": "56789",
            "Language": "en"
        }
    },
    {
        "S": "Only Mapping",
        "MappedTo": [
            {
                "S": "john.smith",
                "DS": "Website"
            }
        ]
    },
    {
        "S": "jane.doe",
        "P": "All artifacts reported",
        "O": "at the same time",
        "T": "2017-05-30T08:51:43.059Z",
        "SM": {
            "Country": "USA",
            "Company": "ACME"
        },
        "OM": {
            "ABTest": {
                "Id": "q1w2e3r4",
                "VariantId": "t5y6u7i8"
            },
            "ReferrerUrl": "https://google.com/",
            "PreviousPageId": "56789",
            "PreviousPageLanguage": "en"
        },
        "MappedTo": [
            {
                "S": "john.smith",
                "DS": "Website"
            }
        ]
    }
]